Meaningful discussion can only happen when there is a certain amount of synchronization established. Synchronization happens when assumptions are shared. The more assumptions that are shared the wider and deeper the communication can go in an atmosphere of acceptance, tolerance and openness. Some basic assumptions that are needed for synchronization are a respect for the value of the others aside from externals, a belief that something of value can be discovered from the other, and a willingness to suspend defensiveness and consider seriously alternative viewpoints.
The more synchronization that is established the stronger the resonance of respect and love can be created.